Five coins are tossed once. What is the probability of getting <strong>AT MOST</strong> four tails?
- A. \frac{31}{32} ✓
- B. \frac{15}{16}
- C. \frac{29}{32}
- D. \frac{7}{8}
Correct Answer: A. \frac{31}{32}
Explanation
Getting at most 4 tails is the complement of getting exactly 5 tails. The probability of getting 5 tails is (\frac{1}{2})^5 = \frac{1}{32}. The required probability is 1 - \frac{1}{32} = \frac{31}{32}.
Related questions on Statistics & Probability
- Let x be the mean of squares of first n natural numbers and y be the square of mean of first n natural numbers. If $\frac{x}{y}=\fra...
- What is the probability of getting a composite number in the list of natural numbers from 1 to 50?
- Two numbers x and y are chosen at random from a set of first 10 natural numbers. What is the probability that (x+y) is divisible by 4?
- A number x is chosen at random from first n natural numbers. What is the probability that the number chosen satisfies $x+\frac{1}{x} \gt...
- Three fair dice are tossed once. What is the probability that they show different numbers that are in AP?